Portable battery charger



FIG. 1 is a front perspective view of a first embodiment of the claimed design;

FIG. 2 is a top view of the embodiment of FIG. 1;

FIG. 3 is a bottom view of the embodiment of FIG. 1;

FIG. 4 is a front view of the embodiment of FIG. 1;

FIG. 5 is a back view of the embodiment of FIG. 1;

FIG. 6 is a right side view of the embodiment of FIG. 1;

FIG. 7 is a left side view of the embodiment of FIG. 1;

FIG. 8 is a front perspective view of a second embodiment of the claimed design;

FIG. 9 is a top view of the embodiment of FIG. 8;

FIG. 10 is a bottom view of the embodiment of FIG. 8;

FIG. 11 is a front view of the embodiment of FIG. 8;

FIG. 12 is a back view of the embodiment of FIG. 8;

FIG. 13 is a right side view of the embodiment of FIG. 8; and,

FIG. 14 is a left side view of the embodiment of FIG. 8.

The ornamental design which is claimed is shown in solid lines in the figures. The broken lines in the figures illustrate portions of the portable battery charger which form no part of the claimed design. 

We claim the ornamental design for a portable battery charger, as shown and described. 